Take out the HDD Take a hammer Destroy the fuck out of the platters. Collect the destroyed platters. Go find some random guys bin. Deposit destroyed platters.
Well that depends what you have on that drive haha.
If you need to use my method. You should probably already be in prison.
About 4 months ago I took my old 2tb drive with stuff on it, smashed it, then tied it to a brick, went out on my boat, and tossed it in the middle of the lake.